I tried Boots' lowest rated washout hair dye to see if it was any use
Schwarzkopf LIVE Pillar Box Red 092 Semi-Permanent Hair Dye - Boots
Amazon.com : BLEACH LONDON Rose Color - Semi-Permanent Pastel Pink, Temporary Hair Color Cream, Vegan, Cruelty Free, Temporary Hair Color Cream 5.07 fl oz : Beauty & Personal Care
Shop Boots Hair Colouring up to 70% Off | DealDoodle